Hello, for some vehicles e.g. threshold outer sheets are painted in the visual area with stone impact protection. E.g. the Polo 4 (9N). This is usually applied with a paint gun, which then also restores the structure as ex factory. My question: Is there also usable stone impact protection in spray cans? The question because I have neither compressor nor gun. That the structure will not get to the original –> negligible. So far, I only know wax U-protection (which evades due to the permanent stickiness) & bitumen U-protection (which eschews due to embrittlement). Is there any U-protection alternatives that come close to the original PVC? If so, just in the can to pass. It is specifically about U-protection / stone impact protection, whereby I consider whether a chassis varnish would not be an alternative.